The Colorado primary is June 26th and Strategies 360, polling for the Service Employees International Union (5/29-6/6; 500 CO general election voters; 387 CO likely Democratic primary voters with an over-sample of an additional 200 “Democratic-leaning midterm drop-off voters”), found US Rep. Jared Polis (D-Boulder) leading former state Treasurer and Colorado Democratic Party endorsed candidate Cary Kennedy, and ex-state Sen. Mike Johnston by a 34-23-12% margin. The addition of low propensity Democratic general election voters, particularly for the primary ballot test, is curious, and makes the ending result somewhat suspect, however.

Strategies 360 also tested Rep. Polis and Ms. Kennedy against state Treasurer Walker Stephenson (R) in a proposed general election campaign. The results are virtually identical. Polis would lead Stapleton, 42-37%, while Kennedy’s edge would be 43-38%.

Colorado is again using a 100% mail-vote system. For the June 26th election, the Secretary of State reports already receiving 134,038 ballots. The Centennial State has more than 1.2 million registered voters.